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Backlight Controller Suggestion

Posted: Thu May 03, 2018 9:53 am
by mbt28
Hi,

I have an lcd and its controller. But I need an backlight controller for it. I couldnt understand very well the backlight controllers logic actually. I need your suggestions:

1) My LCD datasheet shows the backlight configuration as attached. Is it possible to use this controller from aliexpress: https://www.aliexpress.com/item/LED-LCD ... 35172.html?

As far as I see I need 19V/260ma output but this pcb outputs more than it necessary. Please advice me.

2) I would like to understand backlight driving logic, so I need a documentation. Are there any kind of tool available to create automatic schematics for my configuration?

3) Why the led strip have + and - ? Or just positive and ground?

Thanks

Re: Backlight Controller Suggestion

Posted: Fri May 04, 2018 2:05 pm
by mbt28
I just realized I haven't attached the necessary backlight requirements of my LCD.